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Finding the Fourth Proportional to 225,494.41, 311,064.30 and 139,425.88

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Solution

The fourth proportional to 225,494.41, 311,064.30 and 139,425.88 is: 192,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,494.41 : 311,064.30 = 139,425.88 : x
  2. Step 2: Convert to fraction form
    225,494.41/311,064.30 = 139,425.88/x
  3. Step 3: Cross multiply
    225,494.41x = 311,064.30 × 139,425.88
  4. Step 4: Simplify right side
    225,494.41x = 43,370,412,946.16
  5. Step 5: Solve for x
    x = 43,370,412,946.16/225,494.41
  6. Step 6: Final answer
    x = 192,334.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.